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Chemistry, 18.12.2020 08:50 emmaja121003

Check the substances that are elements. (There are 2.) * Hydrogen, H2
Copper (II) hydroxide, Cu(OH)2
Sodium, Na
Water, H20
Zinc hydroxide, Zn(OH)2

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Check the substances that are elements. (There are 2.) * Hydrogen, H2
Copper (II) hydroxide,...
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